Maybe he'd like to get to know you better, but he's shy and unsure what to say in an actual message. Or, he might be the kind of guy who winks at a lot of woman and can't be bothered sending a message. If this is the case, it doesn't mean much.
The law of conservation of mass (from Lavoisier) states that mass can be neither created nor destroyed (but it may change its form into something that is not desired, such as heat with an engine) or that in a chemical reaction, the total mass of the reacting substances is equal to the total mass of products formed.
No. Mass must be conserved in a chemical changes according to the law of conservation of mass, which holds that the mass of the reactants and the mass of the products of a cheâ¦mical reaction must be equal. However, there is no similar law about conserving volume and volume can change dramatically if a gas is produced.